Fastening device for spinning centrifuges used in the production of artificial silk



Sept. 8, 1931. s. BAURIEDEL ET AL 3 9 FASTENING DEVICE FOR SPINNING CENTRIFUGES USED IN THE PRODUCTION OF ARTIFICIAL SILK Filed Dec. 13, 1928 2 Sheets-Sheet l ,WZRABWM J72 venfors Sept. 8, 1931. BAURIEDEL ET AL 1,822,194

FASTENING DEVICE FOR SPINNING CENTRIFUGES USED IN THE PRODUCTION OF ARTIFICIAL SILK Filed Dec. 13. 1928 2 Sheets-Sheet 2 omwg lgw ULQ/u Flag-A 7mve72+or5 Patented Sept. 8, 1931 UNITED STATES PATENT OFFICE GOTTHARD BAURIEDEL, 0]? BARMEN, AND WILLI FICHTHOR-N, 'ELBIERFELD, GER- MANY, .ASSIGNORS TO THEQFIRM AMERICAN BEMBERG CQRPORATION, OF NEW YORK, N. Y.

FASTENING DEVICE FOR SPINNING CENTRIFUGES USED IN THE PRODUCTION OF ARTIFICIAL SILK 7 Application filed December 13, 1928, Serial No. 325,681, and in Germany December 19, 1927.

In the production of artificial-silk, socalled spinning centrifuges or spinning pots are employed for simultaneously collecting and twisting the thread obtained, the thread being laid upon. the wall of the centrifuge under the action' of centrifugal force and twisted simultaneously by the rotation of the centrifuge. Spinning pots of this kind are rotated at a very high speed. Careful centring of the pots is, therefore, essential in order to avoid vibration. Further, it is important that the spinning pots may be easily and quickly mounted upon their driving shafts and also removed therefrom.

The invention relates particularly to spinning pots, in which'a'n openspinning pot,

having at the bottom an opening for the introduction of the thread, is set up in an inverted position upon a disc on the driving shaft. In spinning pots of this kind, it has already been proposed to fasten the conical pot to the conical rim of the plate by means of an inserted indiarubber ring. The indiarubber ring was to be square in cross-section. A flange on the bottom of the driving plate servedto limit the height thatthe pot projected above the plate. This kind of fastening has the disadvantage that it is extraordinarily difiicult, if not impossible, to set'the pot simultaneously on the indiarubber ring and upon the supporting plate. This is, however, necessary in order that the pot may be driven with certainty by the driving plate.

The disadvantage described is avoided according to the invention, by employing an indiarubber ring of circular cross-section serving to fasten and centre the pot upon the driving plate, and which runs along on the driving plate and the spinning pot while the spinning pot is being set up. Thus, rolling friction replaces the sliding friction which occurs in the known device while the spinning pot is being set up. By this means, the operation of setting up the pot is facilitated. Further, it is possible to allow the indiarubber ring to run over a track of varying diameter or a conical path on the spinning pot or driving disc and thus eflect a gradual compression of the ring, without the operation of setting up the pot being made diflicult.

I Grooves are preferably formed in the. spinning pot or the driving plate to receive the indiarubber ring. These rooves are so shaped, however, that the settlng up of the spinning pot until it is pushed down onto the driving plate is not made difficult.

Two constructional forms of a spinning pot in accordance with the invention are illustrated in section in the accompanying drawings, in 'which;

Figure 1 shows a form ofconstruction in which the spinning pot has a smooth surface ang the driving plate has a profiled surface; an

Figure 2 shows a form of construction in which the driving plate has a smooth suriace and the spinning pot has a profiled surace.

In Figure l, the spinning pot 1 is carried by a plate 2 mounted upon the shaft 3 of the driving motor 4. The shaft 3 passes through the bottom of the spinning pot casing 5, part only of which is illustrated.

The rim of the driving plate 2 is so'shaped that there are two grooves 6 and 7 for an indiarubber ring 8, between which grooves there is a swelling 9.

The indiarubber ring 8 takes up the position 8 shown in dotted lines before the spinning pot is pushed down over the plate 2. When the spinning pot is pushed over the plate 2, the ring rolls out of the groove 6 over the swelling 9 into the groove 7. As the groove 7 is made more shallow than the groove 6, the indiarubber ring by this means may be definitely compressed to a certain extent. The spinning pot at the point 10 is once more accurately centred upon the driving plate 2.

In the form of construction according to Figure 2, the method of securing is fundamentally the same, only the grooves 6 and 7, with the intervening swelling 9, are formed on the spinning pot. To correspond with this, the rim 11 of the driving plate 2 is not turned downwards but upwards. The definite centring of the spinning pot in the driving plate 2 is effected by means of the flange 12.

- Before the commencement of the insertion of the pot, the indiarubber ring takes up the position 8 on the pot, shownin dotted lines.

What we claim is 1. The combination with a spinning pot and a driving plate of a fastening for the spinning pot, comprising an elastic ring between a surface of the spinning pot and a concentric surface of a driving plate, and a grooved rolling track upon one of said suraces, said elastic ring being adapted to be rolled into a groove in said rolling track as the spinning pot is. being set up upon the driving plate to secure a good driving connection.

2. The combination with a spinning pot and a driving plate of a fastening for the spinning pot, comprising an elastic ring plate, and being adapted when in the groove to secure a good driving connection and cooperate with a surface of the driving plate contacting with a surface of the spinning pot to center the spinning pot.

In testimony whereof we aflix our signatures.

GOTTHARD BAURIEDEL. WILLI FICHTHORN.

pot is being set up upon the driving plate to secure a good driving connection.

3. The combination with a spinning pot and a driving plate of a fastening for the spinning pot, comprising an elastic ring between the spinning pot and a surface of the driving plate concentric therewith, a rolling track upon the driving plate having two grooves, one of which is more shallow than the other, said elastic ring being adapted v to be initially in the deeper groove and to roll into the more shallow groove as the spinning pot is being set up upon the driving plate to secure a good driving connection.

4. The combination with a spinning pot and a driving plate of a fastening for the spinning pot, comprising an elasticring between a surface of the spinning pot and a surface of the driving plate concentric therewith, and an inclined track upon one of said surfaces adapted to compress the elastic ring and roll it into a groove as the spinning pot is set up upon the driving plate, said groove being of such dimensions that the elastic ring will be compressed between the spinning pot and the driving plate to secure a good driving connection.

5.' The combination with a spinning pot and a driving plate of a fastening for the spinning pot, comprising an elastic ring between the spinning pot and a surface of the driving late concentric therewith, said ring being a apted to roll along surfaces of the spinning pot and the driving plate into a groove in one of said surfaces as the spinning pot is being set up upon'the driving 

